3 years I think: https://en.wikipedia.org/wiki/3D_XPoint https://en.wikipedia.org/wiki/3D_XPoint > It was announced in July 2015 and is available on the open m

3 years I think: https://en.wikipedia.org/wiki/3D_XPoint https://en.wikipedia.org/wiki/3D_XPoint > It was announced in July 2015 and is available on the open market under brand names Optane (Intel) and subsequently QuantX (Micron) since April 2017. For comparison, look at how many decades it took SSDs to become commonplace: https://en.wikipedia.org/wiki/Solid-state_drive#Flash-based_SSDs https://en.wikipedia.org/wiki/Solid-state_drive#Flash-based_...